Final Final Final

README.md

@@ -1,13 +1,13 @@
 # COS498 HW3: PDF Document Management System
 
-This is Homework 3 for **COS498: Server Side Programming Languages** that demonstrates a complete PDF document management system with custom routing, PDF discovery, and validation modules.
+This is Homework 3 for **COS498: Server Side Programming Languages** that demonstrates a PDF document management system with custom routing and validation modules.
 
 ## Project Overview
 
 This project implements a PDF document management system with the following features:
 - **Frontend**: Nginx serving static files and Handlebars templates
 - **Backend**: Node.js/Express server with custom routing and PDF management
-- **PDF Management**: Comprehensive PDF discovery and validation system
+- **PDF Management**: PDF validation and secure serving system
 - **Security**: Path validation and access control for PDF serving
 - **Database Integration**: SQLite database for book and chapter metadata
 - **Containerization**: Docker containers orchestrated with Docker Compose
@@ -17,7 +17,6 @@ This project implements a PDF document management system with the following feat
 ### PDF Document Management
 - **PDF Validation Module**: Comprehensive validation before serving any PDF
 - **Custom Routing**: Dedicated routing module for book and chapter navigation  
-- **PDF Discovery**: Automatic discovery of PDF documents in designated folders
 - **Security Controls**: Path validation and access restrictions
 - **Database Integration**: SQLite database with books and chapters metadata
 
@@ -148,11 +147,6 @@ The backend provides the following endpoints:
 - `GET /book/:bookName/chapter/:chapterFile` - Chapter viewer with PDF display
 - `GET /pdf/:bookName/:chapterFile` - Direct PDF serving (with validation)
 
-### Management Endpoints  
-- `GET /api/pdfs` - List all discovered PDFs
-- `GET /api/books/discovery` - List all available books
-- `POST /api/pdfs/refresh` - Force refresh PDF discovery cache
-
 ## Module Architecture
 
 ### 1. PDF Validation Module (`PDFValidationManager.js`)
@@ -178,20 +172,10 @@ The backend provides the following endpoints:
 
 **Key Features**:
 - Database integration for book/chapter metadata
-- Fallback to file system discovery when database is empty
 - Handlebars template rendering
 - URL construction for PDF links
 - Error handling and 404 responses
 
-### 3. PDF Discovery Module (`PDFDiscoveryManager.js`) - Future Enhancement
-**Purpose**: Automatically discover and catalog PDF documents
-
-**Planned Features**:
-- Folder scanning for PDF files
-- Metadata extraction from filenames
-- Caching system to avoid repeated file system reads
-- Integration with database for metadata storage
-
 ## Architecture Details
 
 ### Frontend (Nginx + Handlebars)
@@ -253,21 +237,14 @@ The system includes sample data with the "Ways of the World" textbook by Strayer
 - **Size Limits**: Prevents serving oversized files
 - **Comprehensive Logging**: Security events logged for monitoring
 
-### Database vs File System
-- **Primary**: SQLite database with books and chapters metadata
-- **Fallback**: File system discovery when database is empty
-- **Hybrid Approach**: Combines database efficiency with file system flexibility
-- **Future-Ready**: Architecture supports expansion to additional data sources
-
 ## Course Information
 
 **Course**: COS498 - Server Side Programming Languages  
 **Assignment**: Homework 3 - PDF Document Management System  
 **Focus**: Demonstrating:
 - Custom routing modules and URL handling
-- PDF document discovery and management
-- Comprehensive security validation systems
-- Database integration with file system operations
+- PDF validation and security systems
+- Database integration with file operations
 - Modular architecture and separation of concerns
 
 ## Implementation Requirements Met
@@ -278,12 +255,6 @@ The system includes sample data with the "Ways of the World" textbook by Strayer
 - ✅ Handlebars template rendering with dynamic data
 - ✅ URL construction for PDF links and navigation
 
-### 2.4.2 PDF Discovery Module ✅
-- ✅ `PDFDiscoveryManager.js` searches designated folders
-- ✅ File system scanning and PDF cataloging
-- ✅ Caching system to avoid repeated reads
-- ✅ Metadata extraction from filenames and paths
-
 ### 2.4.3 PDF Validation Module ✅
 - ✅ `PDFValidationManager.js` validates all PDF requests
 - ✅ File existence verification before serving